This page offers some options for locating an electrical source for a new wall receptacle or a light fixture, and running the new cable required. To make this job easier, it’s best to have a second person at one end or the other of a new run, to sight the end of the fish tape and help guide cable. Also be sure to always turn off the affected circuits before working on household electricity.
Reinstall the wallboard strip. Trim along the edges with a sharp drywall knife first to remove any torn paper that could created a gap behind the molding.
A rigid, flat metal tape used to run electrical cable through a finished wall or ceiling. The rigid nature of the tape makes it possible to push it past most obstructions in the wall cavity by turning the reel to either side. See Run New Wiring for more about fishing cable.
Where no means exists within the snap switch enclosure for connecting to the equipment grounding conductor or where the wiring method does not include or provide an equipment grounding conductor, a snap switch without a connection to an equipment grounding conductor shall be permitted for replacement purposes only.